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        1 - The Effect of Vase Solutions Containing Cobalt, Cerium, and Silver Nanoparticles on Postharvest Life and Quality of Cut Birds of Paradise (<i>Strelitzia reginae</i>)
        Jahangir Azarhoosh Davood Hashemabadi Leila Asadpour Behzad Kaviani
        A study was conducted on increasing the postharvest quality and vase life of cut Strelitzia reginae flowers based on a randomized complete design with 10 treatments in three replications. The experimental treatments included cobalt chloride (CoCl2) (250 and 500 mgL-1), أکثر
        A study was conducted on increasing the postharvest quality and vase life of cut Strelitzia reginae flowers based on a randomized complete design with 10 treatments in three replications. The experimental treatments included cobalt chloride (CoCl2) (250 and 500 mgL-1), cerium nitrate (Ce (NO3)3) (100, 300, and 600 &micro;M), silver nanoparticle (SNP) (20 and 40 mgL-1), and Nanosil (2000 and 4000 &micro;M) applied as the 24-hour pulse. Distilled water was used as the control. Results showed that the longest vase life (11.68 days) was obtained from the application of 300 &micro;M Ce(NO3)3, but it did not significantly differ from the treatments of 100 and 600 &micro;M Ce (NO3)3, 500 mgL-1 CoCl2, and 20 mgL-1 SNP. The best treatments in increasing water uptake and dry matter, preserving fresh weight, and reducing stem-end and vase solution bacteria were 300 and 600 &micro;M Ce (NO3)3. The lowest malondialdehyde accumulation (0.09 nmolg-1 FW) and the highest activity of peroxidase (0.147 nmolg-1 FW) and catalase (1.02 nmolg-1 FW) were obtained from the plants treated with 300 &micro;M Ce(NO3)3 in the vase solution. The highest sepal flavonoid (0.493 %) was related to the treatment of 2000 &micro;M Nanosil. The control plants exhibited the greatest loss of fresh weight and the lowest values of the recorded traits. Based on the results, it is recommended to use a vase solution containing 300 &micro;M Ce (NO3)3 and 3 % sucrose to preserve the quality and increase postharvest vase life of cut S. reginae flowers. تفاصيل المقالة
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        2 - The Interactive Effect of Sodium Benzoate and Ethanol on the Vase Life of Cut Roses cv. ‘Avalanche’
        Neda Nekouyar Mahfam Hamidi Emani
        The vase life of cut roses is decreased by ethylene and water stress. Ethanol and sodium benzoate are among the antimicrobial and anti-ethylene compounds that are applied to vase solutions. This research investigated the effect of different rates of ethanol (0, 2, 4, an أکثر
        The vase life of cut roses is decreased by ethylene and water stress. Ethanol and sodium benzoate are among the antimicrobial and anti-ethylene compounds that are applied to vase solutions. This research investigated the effect of different rates of ethanol (0, 2, 4, and 6 %) and sodium benzoate (0, 150, 200, and 250 mg l-1) on the vase life of cut roses cv. &lsquo;Avalanche&rsquo; in a factorial experiment based on a randomized complete block design with 16 treatments and three replications. The experimental treatments were applied as a 24-hour pulse. Distilled water was used as the control. The results showed the significant interactive effect of &ldquo;ethanol &times; sodium benzoate&rdquo; on improving vase life and other studied traits. The longest vase life (13 days), water uptake (3.54 ml g-1 F.W.), dry matter (44.38 %), petal protein (35.08 %), and total chlorophyll (13.09 mg g-1 F.W.) were obtained from the application of &ldquo;ethanol 4 % &times; 150 mg l-1 sodium benzoate&rdquo;. This treatment also exhibited the lowest fresh weight loss (1.98 %), stem-end bacteria population (8.33 Log10 CFU ml), vase solution bacteria population (23.33 Log10 CFU ml), and ethylene synthesis (0.4 nl l-1 h-1 g-1 F.W.). According to the results, it is recommended to apply &ldquo;ethanol 4% &times; 150 mg l-1 sodium benzoate&rdquo; to preserve the quality and extend the vase life of cut roses cv. &lsquo;Avalanche&rsquo;. تفاصيل المقالة